The lean body weight (LBM) of a pediatric patient or adult can be estimated from the patient's height and weight.
Parameters:
(1) gender
(2) age in years
(3) Tanner stage in female pediatric patients
(4) height in meters
(5) body weight in kilograms
Equations of Boer for lean body mass in adults:
lean body mass for adult males in kilograms =
= (0.407 * (body weight in kilograms)) + (26.7 * (height in meters)) - 19.2
lean body mass for adult females in kilograms =
= (0.252 * (body weight in kilograms)) + (47.3 * (height in meters)) - 48.3
Equations of Raes et al for lean body mass in pediatric patients:
lean body mass for pediatric males = equation of Boer (above)
lean body mass for a pediatric female at Tanner Stage 1 = equation of Boer for males (above)
lean body mass for a pediatric female at Tanner Stage 5 = equation of Boer for females (above)
lean body mass for a pediatric female at Tanner Stages 2 to 4 =
= average of the LBM for a female in Tanner Stage 1 and a female in Tanner Stage 5 =
= (0.3295 * (body weight in kilograms)) + (37 * (height in meters)) - 33.75
